For the Long D 3D printer project, I need a way to power a Raspberry Pi from 24V. I also need a way to control a dumb RGB LED strip, powered by 12V. This project does that in hat format
Components
6×
NTD4906N Power Mosfet
1×
LMR14050SDDAR
1×
LM25011MYX/NOPB
Power Management ICs / Switching Regulators and Controllers
2×
B360A-13-F
Discrete Semiconductors / Diodes and Rectifiers
There are a lot of 0402 components on here, but the board is done. It doesn't look pretty, but I'm getting 5V and 12V off a 24V supply. It's done, and I'm not building another.
his project takes 24VDC in, and outputs 12V for LEDs, and 5V for a Raspberry Pi. TI has a neat tool where you can enter the requirements for a power supply, and it spits out a proper circuit. Here's what it did for me:
That's an LM25011 for the 12V supplying 2A, and an LMR14050 for 5V supplying 2A.
Dead simple, all you have to do is lay it out on a board.
This board also has six outputs for two RGB LED strips on the PWM outputs of the Pi. These outputs use a NTD4906N power MOSFET:
What does the board look like?
No it's not perfect, but it will work, and I like putting instructions and unicorns on the silkscreen.
Since you're designing a board why not add a LiPo battery backup to the 5V supply? You could ensure a smooth shutdown of the Raspi and prevent SD card corruption.
Since you're designing a board why not add a LiPo battery backup to the 5V supply? You could ensure a smooth shutdown of the Raspi and prevent SD card corruption.